1、 6 1 6(xy7y24)(x2xy7y25) 3 5 1 1(xyy)(xyx9) 3 7(4y8x5z2)(3y3x4z2) (7m2 m2)(2m8n4) (2x27x3)8(6x22x) 8(x21)3(x27) (x2y6xy5)7(x2y2xy9) 1 1(x215x20y)(x215x17y) 4 4(2k37k22)(6k34k23k) 2 4(5k28k)(8k25k8) (7a24a5b)(6a22a4b) 2x2( x25x8)(4x5) 5y2(3x2y)(2x29y2) 1(5x24xyx)( x29xy9x) 7 1(xy5y28)(x2xy6y23) 6 5 8
2、 1(xyy)(xyx9) 7 8(2y5x7z2)(3y7x7z2) (9m28m7)(5m3n1) (5x25x3)3(8x25x) 8(x23)8(x23) (x2y3xy8)3(x2y2xy3) 2 1(x214x11y)(x212x25y) 3 3(4k35k24)(4k38k23k) (4k24k)(3k23k3) (4a23a2b)(3a28a b) 8x2(5x23x2)(9x4) 6y2(6x2y)(9x24y2) (8x24xyx)( x27xy x) 3 1(xy7y23)(x2xy4y21) 4 5 3 5(xyy)(xyx8) 4 6(9y4x9z2)(6y8x4z2) (6m24m9)(7m n7) ( x25x6)9( x28x) 4(x28)6(x23) (x2y3xy2)2(x2y3xy7) (x212x18y)(x216x19y) 5 5(2k35k26)(5k38k26k) (3k27k)(8k29k3) (4a24a5b)(4a2 a4b) 9x2(5x29x6)(9x8) y2(5x2y)(4x22y2) (8x2 xyx)(3x28xy4x)